An Open-Source JavaScript Library for Mobile-Friendly Interactive Maps

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3
votes
2answers
523 views

Search and zoom json features in Leaflet

How can I add search box to map that allows user to search>zoom to polygon name. If there are 100 polygons, user can type name of polygon (i.e., Symantec) then map zooms to matching county?
3
votes
1answer
918 views

GeoJSON, circlemarkers using the Leaflet OverlappingMarkerSpiderfier plugin

I am wondering if I can use the Leaflet OverlappingMarkerSpiderfier plugin with my circlemarkers. I've loaded a GeoJSON file and added circlemarkers using; var gj = L.geoJson(route, { ...
3
votes
2answers
96 views

Mixing coodinate systems

I'm planning to create an online map with openlayers (2 or 3) or leaflet. I have to show some points/markers (~30.000), polygons (~500) and lines in an area of ~10x10 kilometers in several layers. ...
3
votes
1answer
225 views

looking for an esri compatible javascript engine

I work on an esri heavy team, i'm looking for a mapping engine that will give me flexibility to build on top of and leverage only the pieces I need and or add more as the app grows. I've been using ...
3
votes
2answers
2k views

OpenLayers vs Leaflet for specific app

Could anybody give me some advice on which one should I use? OpenLayers or Leaflet I will implement OSM on a web-app for taxi management. The requirements for the map part are: Tracking of the ...
3
votes
1answer
396 views

How to make transparent the background of a WMS layer in Leaflet

I have inserted the following layer from a geoserver in the following Leaflet map : var nexrad = new L.TileLayer.WMS("URL", { layers: 'Wrecks:WrecksGreaterNorthSea', format: 'image/png', ...
3
votes
2answers
563 views

How do you get the nodes of an area in Overpass API in the “right” order?

I use the Overpass API to get the boundary of an OSM relation. I then use the result to display the boundary on a leaflet map. My problem is however, that the nodes are not in the "right order". ...
3
votes
1answer
437 views

Leaflet snap circle draw to marker

I am looking for ideas/libraries that enable snapping when I create a circle with leaflet draw. There is the libaray Leaflet snap, that enables snapping of draggable markers to polylines and other ...
3
votes
1answer
2k views

Which plugin can draw topoJson right within Leaflet without conversion?

I already have asked how to reduce file size and increase performance for publishing spatial data on the web using Leaflet, here. A conversion to TopoJSON has reduced the file size by approximately ...
3
votes
2answers
163 views

How to display information in a div outside the map?

I tried a bit around and created a simple map with two polygons(most of the code I got from the Interactive Choropleth Map Tutorial). I added a "L.control()" to show information about the polygons in ...
3
votes
2answers
2k views

Leaflet proj4leaflet with multiple projections

I am looking at having both EPSG4326 tiles and EPSG3857(cloudmade) tiles on a single map (but separate layers). I have been looking at the proj4leaflet plugin, and it "appears" to me that this might ...
3
votes
1answer
497 views

GeoServer 2.3.0 Proxy Setting

I've upgraded to GeoServer 2.3.0 running on Apache Tomcat 7.0.39 on my host WebFaction. My websites and GeoServer are on same host but different ports. How do I go about setting a proxy so that my ...
3
votes
2answers
2k views

How do I project my WMS tilelayer in leaflet if I want it to display as an overlay on my basemap if they have different EPSG?

So my basemap is a world Mercator projection and in wfs format and I'm trying to put a WMS overlay in a different projection over it? Leaflet's API didn't give me much info on changing the epsg so is ...
3
votes
1answer
883 views

Creating proper GeoJSON from PostGIS data using node.js

I am trying to build a GeoJSON object from a SQL query to some GIS point data in a postgis postgresql database. A snippet of my node.js app.js is below. As it stands I understand building the type ...
3
votes
1answer
203 views

Put LeafletJS geoJSON's into a MySQL database through PHP

I'm doing a project that will let users manipulate a map through LeafletJS, creating circles and polygons on top of the map. I need to gather these inputs for later analysis, using a MySQL database ...
3
votes
1answer
136 views

Zoom in to see details

I have 2 shape files, one that shows all the counties on an island, the other shows all the villages on the island. Here is the scenario: My initial map shows the counties. When you click on a ...
3
votes
1answer
2k views

How to use Leaflet Marker Cluster on markers from Leaflet-layerJSON (Overpass API)

I'm having troubles getting the Leaflet Marker Cluster working with Leaflet-layerJSON. I'm trying to make a Leaflet map with data from OpenStreetMap. The markers are showing on the map, but they are ...
3
votes
2answers
1k views

Leaflet highlight feature by ID

I have a map application where: I load polygons as GeoJSON objects I draw all polygons in a single layer I highlight a polygon on mouse hover What I need to do is the following: on mouse hover, I ...
3
votes
1answer
2k views

Change default leaflet marker color

I'm using esri-leaflet, and leaflet inherently to add a point feature class (geojson) to a map. What is the best way to add and style the layer? I've see pointToLayer on the leafletjs.com, but don't ...
3
votes
1answer
434 views

How can I use Leaflet with esri-leaflet and ArcGIS Online services

I've used public ArcGIS Online services plenty of times in ESRI JS web apps and I imagine that using them as layers in Leaflet is pretty much the same. The one problem I can see is how would one ...
3
votes
1answer
649 views

Options for getting data from SQL Server into Leaflet app?

I have polygon data in SQL Server 2012 that I need to get onto a Leaflet application - we're not talking thousands of polygons, but simplified U.S. counties where only one state will be displayed at a ...
3
votes
1answer
930 views

Drag marker from outside to leaflet map

Is there any way to drag a marker from outside to the map using leaflet Api . Any suggestions plese help me?
3
votes
1answer
558 views

Does leaflet support KML Ground Overlays?

I found an example showing KML overlays at http://harrywood.co.uk/maps/examples/leaflet/kml.html but it only plots vector layer using polygons. Is there any way to plot Ground overlays of KML (like ...
3
votes
1answer
3k views

select two markers & draw line between them in leaflet

I am very much new to leaflet. I have multiple markers plotted on my map in leaflet. now I have to draw line between two markers when I select them. Can any one help in doing this.
3
votes
1answer
3k views

CloudMade Routing with Leaflet: route is not displayed

I am trying to consume the CloudMade routing API using Leaflet. So far, I have managed to pass points and receive a response, and parse that response into an array of points. The array of points is ...
3
votes
2answers
1k views

Leaflet WMTS layer

I would like to start using Leaflet instead of OpenLayers, but I can't find a way to load WMTS layer into the map. Is that possible with Leaflet, or do I have to stick with OL? I haven't found ...
3
votes
1answer
5k views

How to set up a layer control using Leaflet?

I have been working on a mapping application using Leaflet. I am using a WMS on Geoserver to get my layers, which are overlaid on a cloudmade basemap. I tried to use the layer control on my map by ...
3
votes
1answer
206 views

How to set up a maximal zoom for polygons in Leaflet?

How to set up a maximal zoom for some layer, for example state polygons? I need that my US polygons which represent states have maxZoom 6, and when zoomed higher than 6, that US counties show up ...
3
votes
1answer
46 views

Leaflet + GeoJson = problem with style

I got my first leaflet + geojson project partly working! (even the popup with content from the geojson file!) but I still have a problem with style the geojson (export from mapbox) file has point, ...
3
votes
1answer
215 views

d3 + Leaflet apply class value from geojson data

I have a geojson file that I'l able to draw just fine with D3 + Leaflet. I'm having trouble applying a class to the svg objects with a value from the geojson file. Each feature in the geojson file has ...
3
votes
1answer
254 views

How to display UtfGrid info

first off sorry if this question have been asked, I have been looking for an answer for some time now but cant find any solution. I have created a .mbtiles file with Tilemill, extracted the .png and ...
3
votes
2answers
952 views

Leaflet geoJson in front of markers in a FeatureGroup

I am loading some markers and json data to a leaflet map. I need to get my json in front of the markers. I have tried placing the markers and json in seperate FeatureGroups and then tried ...
3
votes
1answer
1k views

Leaflet add and remove legends with layer selection

I'm new to Leaflet/Javascript and have been struggling to get legends a map to show only when a specific layer is selected from the layer control. I have three layers, one of which I would like to ...
3
votes
1answer
407 views

leaflet choropleth map using dynamic value

I am doing a choropleth map using leaflet and JSON data. I got a clean tutorial in leaflet site. In that tutorial the used us-states.js JSON file where the choropleth was based on the ...
3
votes
1answer
1k views

display a choropleth map using D3 and Leaftlet

I am trying to get a leaflet map to display a choropleth map using d3. I have written this code using samples I have found however the map just displays as the black fill, not the color classes I ...
3
votes
2answers
446 views

leaflet geojson contextmenu

I want to add a context menu on right click for various elements on my geojson layer (I'm doing a road map so on a right click on the road at any part I want to show the context menu). I've managed ...
3
votes
1answer
940 views

reusing cached tiles with leaflet, mbtiles and mbtiles-php

I am using Leaflet and infostream's fork of mbtiles-php to serve MBTiles stored on my server. I'm using a Leaflet layer group (and a layer control) to serve two MBTiles files. When I toggle between ...
3
votes
1answer
74 views

Submit form information from a leaflet popup to MySQL table

I have a leaflet map and I want to have the user fill out a form in a leaflet popup and upon clicking the 'submit' button - the information in the form will be inserted into my MySQL database. As a ...
3
votes
0answers
70 views

Using Waze map tiles with Leaflet

I came across this Map Comparisons where they have used Waze map tiles. I searched around and couldn't find any official documentation for using Waze tiles in leaflet. I couldn't even find their ...
3
votes
1answer
183 views

How to create an exact tracking route from GPS data with animated icon?

Probably this is not purely GIS related question, its related to developing issues. I am just asking if there is any kind of suggestions from Gurus. I am building an tracking application where GPS ...
3
votes
0answers
88 views

Solution for Test Automation for web gis/mapping application?

I've to find a solution for test automation for web gis/mapping application that using OpenLayers 2.x or Leaflet as javascript libraries. I'm oriented on evaluate Selenium WebDriver (or other similar ...
3
votes
0answers
73 views

How to change layer order in leaflet.js

I would like to be able to change the order of the layers in leaflet. I tried implementing two leaflet plugins in order to change the layer order. First I tried leaflet-control-orderlayers, which ...
3
votes
0answers
101 views

What is the openlayer.js alternative of unloadinvisibletiles of leaflet.js

I am using open layers with a tile server. I want to load maps while panning and destroy the loaded region when out of screen (Alternative to unloadinvisibletiles of leaflet.js) How am i suppose to ...
3
votes
0answers
171 views

Check/uncheck overlays in groupedlayercontrol.js

In a Leaflet-based app I have create several overlays, grouped with leaflet.groupedlayercontrol.js, as shown in this image: Everything works well, but I need to uncheck certain layers, allowing the ...
3
votes
0answers
131 views

Adding an offset to a Leaflet TileLayer on the fly

I'm currently using Leaflet to display 18th century maps of Belgium as a base layer with a vector overlay of the present day road system. Although the maps are absolutely gorgeous ...
3
votes
1answer
231 views

Leaflet change color dynamically

I am new with leaflet and I need help to change the color of a polygon on a choropleth map dynamically. In my website I have an slider, and depending on the position of the handle, the colors of the ...
3
votes
0answers
146 views

Leaflet Marker Dragend Bug/Difficulty

I am having a problem with leaflet markers. The problem is that when I drag a marker with a lower z-index under another marker with a higher z-index and let it go, it makes another marker. I have a ...
3
votes
0answers
1k views

How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane?

I have SVG on top of GeoJSON in my map. How can a leaflet SVG overlay be placed outside of the leaflet-overlay-pane while keeping GeoJSON in place in the leaflet-overlay-pane? (For example, how could ...
3
votes
1answer
542 views

How to get data from TileMill tileLayer properties in Mapbox for click/hover

I've successfully used Leaflet to load a geoJSON polygon-shapefile with data, and added click and hover interactivity to the layer. For a large dataset, I switched to mapbox.js 1.6.1, used TileMill to ...
3
votes
0answers
701 views

Using Custom Map Projection On Leaflet

I have an application displaying a EPSG:3414 map running on Openlayers - jsfiddle working sample that works. I am trying to implement the same on Leaflet - jsfiddle non-working, it is not working as ...